refactor: use prettier

Author: Lars Kölpin-Freese

.prettierignore

@@ -0,0 +1 @@
+src/pattern-tree.snapshot.ts

package-lock.json

@@ -7,6 +7,7 @@
   "scripts": {
     "build": "webpack -p && webpack -p --config webpack.config.browser.js",
     "prepublish": "npm run test && webpack -p",
+    "prettier": "prettier --write \"{src,__{tests,mocks}__}/**/*.{tsx,ts}\"",
     "gen-tree": "ts-node ./src/create-snapshot.ts",
     "start": "babel-node example/node.js",
     "test": "jest",
@@ -45,7 +46,7 @@
     "babel-preset-env": "^1.6.1",
     "babel-preset-flow": "^6.23.0",
     "jest": "^27.0.6",
-    "prettier": "^1.11.1",
+    "prettier": "^1.19.1",
     "regenerator-runtime": "^0.11.1",
     "ts-jest": "^27.0.5",
     "typescript": "^4.3.5",

package.json

@@ -1,8 +1,9 @@
-import tree from './model/pattern-tree';
+import tree from "./model/pattern-tree";
 
-require('fs')
-  .createWriteStream(__dirname + '/pattern-tree.snapshot.ts')
+require("fs")
+  .createWriteStream(__dirname + "/pattern-tree.snapshot.ts")
   .write(
-    '// THIS FILE IS AUTOGENERATED. DO NOT EDIT\nexport default ' +
-      JSON.stringify(tree())
+    "// THIS FILE IS AUTOGENERATED. DO NOT EDIT\nexport default " +
+      JSON.stringify(tree()) +
+      "\n"
   );

src/create-snapshot.ts

@@ -1,46 +1,50 @@
-import {filetypeinfo, filetypename, filetypemime, filetypeextension} from './index';
+import {
+  filetypeinfo,
+  filetypename,
+  filetypemime,
+  filetypeextension
+} from "./index";
 
 describe("Tests the public API", () => {
   it("filetypeinfo", () => {
-      const bytes = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
-      expect(filetypeinfo(bytes)).toHaveLength(1)
-      expect(filetypeinfo(bytes)[0]).toHaveProperty("typename")
-  })
+    const bytes = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
+    expect(filetypeinfo(bytes)).toHaveLength(1);
+    expect(filetypeinfo(bytes)[0]).toHaveProperty("typename");
+  });
 
   it("filetypename", () => {
     const bytes = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
-      expect(filetypename(bytes)).toHaveLength(1)
-      expect(filetypename(bytes)).toEqual(["png"])
-  })
-
+    expect(filetypename(bytes)).toHaveLength(1);
+    expect(filetypename(bytes)).toEqual(["png"]);
+  });
 
   it("filetypename failure", () => {
     const bytes = [0x89, 0x00, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
-      expect(filetypename(bytes)).toHaveLength(0)
-      expect(filetypename(bytes)).toEqual([])
-  })
+    expect(filetypename(bytes)).toHaveLength(0);
+    expect(filetypename(bytes)).toEqual([]);
+  });
 
-  it('filetypemime', () => {
+  it("filetypemime", () => {
     const bytes = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
-    expect(filetypemime(bytes)).toHaveLength(1)
-    expect(filetypemime(bytes)).toEqual(["image/png"])
-  })
+    expect(filetypemime(bytes)).toHaveLength(1);
+    expect(filetypemime(bytes)).toEqual(["image/png"]);
+  });
 
-  it('filetypemime not found', () => {
+  it("filetypemime not found", () => {
     const bytes = [0x89, 0x50, 0x00, 0x47, 0x00, 0x0a, 0x1a, 0x0a];
-    expect(filetypemime(bytes)).toHaveLength(0)
-    expect(filetypemime(bytes)).toEqual([])
-  })
+    expect(filetypemime(bytes)).toHaveLength(0);
+    expect(filetypemime(bytes)).toEqual([]);
+  });
 
-  it('filetypeextension', () => {
+  it("filetypeextension", () => {
     const bytes = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
-    expect(filetypeextension(bytes)).toHaveLength(1)
-    expect(filetypeextension(bytes)).toEqual(["png"])
-  })
+    expect(filetypeextension(bytes)).toHaveLength(1);
+    expect(filetypeextension(bytes)).toEqual(["png"]);
+  });
 
   it("filetypextension not found", () => {
     const bytes = [0x89, 0x50, 0x4e, 0x47, 0x00, 0x0a, 0x1a, 0x0a];
-    expect(filetypeextension(bytes)).toHaveLength(0)
-    expect(filetypeextension(bytes)).toEqual([])
-  })
-})
+    expect(filetypeextension(bytes)).toHaveLength(0);
+    expect(filetypeextension(bytes)).toEqual([]);
+  });
+});

src/index.spec.ts

@@ -1,17 +1,17 @@
-import patternTree from './pattern-tree.snapshot';
-import {Leaf, Node} from "./model/tree";
+import patternTree from "./pattern-tree.snapshot";
+import { Leaf, Node } from "./model/tree";
 
 const hex = num => new Number(num).toString(16).toLowerCase();
-const toHex = num => `0x${hex(num).length === 1 ? '0' + hex(num) : hex(num)}`;
+const toHex = num => `0x${hex(num).length === 1 ? "0" + hex(num) : hex(num)}`;
 
 export const filetypeinfo = (bytes: number[]): Leaf[] => {
   let currentByteIndex = 0;
   let guessFile = [];
   let step: Node = patternTree;
   while (true) {
     const currentByte = toHex(bytes[currentByteIndex]);
-    if (step.bytes['?'] && !step.bytes[currentByte]) {
-      step = step.bytes['?'];
+    if (step.bytes["?"] && !step.bytes[currentByte]) {
+      step = step.bytes["?"];
     } else {
       step = step.bytes[currentByte];
     }
@@ -28,6 +28,9 @@ export const filetypeinfo = (bytes: number[]): Leaf[] => {
 };
 export default filetypeinfo;
 
-export const filetypename = (bytes: any[]): string[] => filetypeinfo(bytes).map(e => e.typename)
-export const filetypemime = (bytes: any[]): string[] => filetypeinfo(bytes).map(e => e.mime ? e.mime : "")
-export const filetypeextension = (bytes: any[]): string[] => filetypeinfo(bytes).map(e => e.extension ? e.extension : "")
+export const filetypename = (bytes: any[]): string[] =>
+  filetypeinfo(bytes).map(e => e.typename);
+export const filetypemime = (bytes: any[]): string[] =>
+  filetypeinfo(bytes).map(e => (e.mime ? e.mime : ""));
+export const filetypeextension = (bytes: any[]): string[] =>
+  filetypeinfo(bytes).map(e => (e.extension ? e.extension : ""));

src/index.ts

@@ -1,8 +1,8 @@
-import snapshot from '../pattern-tree.snapshot';
-import tree from './pattern-tree';
+import snapshot from "../pattern-tree.snapshot";
+import tree from "./pattern-tree";
 
-describe('Integrate all types', () => {
-  it('Creates a whole tree', () => {
+describe("Integrate all types", () => {
+  it("Creates a whole tree", () => {
     expect(tree()).toEqual(snapshot);
   });
 });